Full TGIF Record # 520
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Web URL(s):https://dl.sciencesocieties.org/publications/aj/pdfs/73/4/AJ0730040605
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Publication Type:
i
Refereed
Author(s):Fales, S. L.; Wakefield, R. C.
Author Affiliation:Fales: Research Associate; Wakefield: Professor, Department of Plant and Soil Science, University of Rhode Island, Kingston, Rhode Island
Title:Effects of turfgrass on the establishment of woody plants
Source:Agronomy Journal. Vol. 73, No. 4, July/August 1981, p. 605-610.
Publishing Information:Madison, WI: American Society of Agronomy
# of Pages:6
Keywords:TIC Keywords: Allelopathy; Fertilizer placement; Nitrogen; Trees; Woody ornamentals; Soil moisture; Root growth; Woody plant-grass competition; Woody plants; Growth factors; Trunks; Forsythia x intermedia; Cornus florida
Abstract/Contents:"Suppression of woody plants by grasses had been widely reported; but few studies have investigated the factors responsible for the reduced growth and poor appearance often shown by ornamental trees and shrubs planted in association with turfgrass. This research was undertaken to determine the major factors responsible for this phenomenon. A field study, conducted over two growing season, evaluated the growth of flowering dogwood (Cornus florida L.) and forsythia (Forsythia intermedia Spaeth.) planted in established sod (Enfield silt loam soil, Typic Dystrochrept). Treatments included different sized areas of turf-free space (0.3m2, 0.7m2, and 23.7m2), surface and subsurface placement of fertilizer and irrigation, and two mowing heights (10 cm and 4 cm). Turfgrass significantly reduced the growth of both woody species. Although supplementary fertilizer, applied as a topdressing, failed to benefit the ornamentals, subsurface treatments resulted in considerable increases in growth. Competition for moisture did not appear to be responsible for the observed differences in growth, since maintaining a high level of soil moisture failed to overcome the inhibitory effects of the turfgrass. Competition for N, however, was indicated by results of leaf tissue analysis. A bioassay experiment tested the hypothesis that the competitive nature of turfgrasses involves an allelopathic mechanism. Aqueous leachates of the roots of perennial ryegrass (Lolium perenne L.), red fescue (Festuca rubra L.), and Kentucky bluegrass (Poa pratensis L.) were applied to rooted cuttings of forsythia. Top growth of the forsythia was inhibited by leachates from all three turfgrass species. Root growth was suppressed by ryegrass and red fescue leachates. Results of these experiments indicate that the suppression of woody plants by turfgrasses may involve chemical inhibition as well as direct competition for available N."
Language:English
References:28
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fales, S. L., and R. C. Wakefield. 1981. Effects of turfgrass on the establishment of woody plants. Agron. J. 73(4):p. 605-610.
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Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/73/4/AJ0730040605
    Last checked: 12/08/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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